成都理工大学学报（自然科学版）2017，Vol.44Issue(3)：305-317,13.DOI:10.3969/j.issn.1671-9727.2017.03.04
阿尔金断裂东端酒西盆地古近系物源分析及意义
Provenance analysis of Paleogene in the Jiuxi basin on eastern Altyn Tagh fault and its implication
摘要
Abstract
Sedimentology and geochronology of Paleogene sequences (including the Huoshaogou and Baiyanghe Formations) in the Hongliuxia section of Jiuxi basin are studied so as to explore the relation between the Paleogene sediments with left strike slip Altyn Tagh fault.It shows that the conglomerates in the formations are mainly composed of low-middle grade metamorphic rocks and sedimentary rocks in the Huoshaogou Formation,and of magmatic rocks in the Baiyanghe Formation.Study of these conglomerates reveals that the main paleocurrents are west and northwest direction.The sandstones from the Huoshaogou and Baiyanghe Formations belong to the recycled orogeny environment based on the Q-F-L diagram.Detrital zircons of the four Eocene sandstones obtained two Precambrian characteristic age populations,Neoproterozoic and Mesoproterozoic.Contrasting with periphery provenance sources,it is showed that the provenance of Huoshaogou Formation was mainly from the Altyn Tagh terrane.On the basis of geochronology data,along with the regional stratigraphic and paleocurrent studies,it is considered that the Altyn Tagh terrane is departed from Jiuxi basin after Oligocene,and the maximum left strike slip for Altyn Tagh fault is over 450 km.关键词
阿尔金断裂/酒西盆地/阿尔金地体/物源分析/走滑Key words
Altyn Tagh fault/Jiuxi basin/Altyn Tagh terrane/provenance analysis/strike-slip分类
天文与地球科学引用本文复制引用
邓斌,冉波,叶玥豪,王自剑,王成善,朱利东,田庆,岳雅惠..阿尔金断裂东端酒西盆地古近系物源分析及意义[J].成都理工大学学报（自然科学版）,2017,44(3):305-317,13.基金项目
国家自然科学基金项目(41102064,41230313) （41102064,41230313）
教育部新教师基金项目(20105122120013) （20105122120013）
四川省教育厅重点项目(09ZA005) （09ZA005）
The 111 Project of China Grant(Project B07011). （Project B07011）
